linux-kernel - Re: [PATCH v3 10/14] dt-bindings: i2c: i2c-fsi: Switch to yaml format

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Message-ID: <bc58a063-9eaf-4bcb-b538-a95d8d03ea24@linux.ibm.com>
Date: Fri, 26 Apr 2024 10:23:30 -0500
From: Eddie James <eajames@...ux.ibm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, linux-aspeed@...ts.ozlabs.org
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsi@...ts.ozlabs.org, linux-spi@...r.kernel.org,
        linux-i2c@...r.kernel.org, lakshmiy@...ibm.com, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, joel@....id.au,
        andrew@...econstruct.com.au
Subject: Re: [PATCH v3 10/14] dt-bindings: i2c: i2c-fsi: Switch to yaml format


On 4/26/24 01:29, Krzysztof Kozlowski wrote:
> On 25/04/2024 23:36, Eddie James wrote:
>> Switch to yaml for the FSI-attached I2C controller.
>>
>> Signed-off-by: Eddie James <eajames@...ux.ibm.com>
> Please use scripts/get_maintainers.pl to get a list of necessary people
> and lists to CC (and consider --no-git-fallback argument). It might
> happen, that command when run on an older kernel, gives you outdated
> entries. Therefore please be sure you base your patches on recent Linux
> kernel.
>
> Tools like b4 or scripts/get_maintainer.pl provide you proper list of
> people, so fix your workflow. Tools might also fail if you work on some
> ancient tree (don't, instead use mainline), work on fork of kernel
> (don't, instead use mainline) or you ignore some maintainers (really
> don't). Just use b4 and everything should be fine, although remember
> about `b4 prep --auto-to-cc` if you added new patches to the patchset.
>
>> ---
>>   .../devicetree/bindings/i2c/i2c-fsi.txt       | 40 -------------
>>   .../devicetree/bindings/i2c/ibm,i2c-fsi.yaml  | 59 +++++++++++++++++++
>>   2 files changed, 59 insertions(+), 40 deletions(-)
>>   delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-fsi.txt
>>   create mode 100644 Documentation/devicetree/bindings/i2c/ibm,i2c-fsi.yaml
>>
>
>> -    };
>> diff --git a/Documentation/devicetree/bindings/i2c/ibm,i2c-fsi.yaml b/Documentation/devicetree/bindings/i2c/ibm,i2c-fsi.yaml
>> new file mode 100644
>> index 000000000000..473a45de1b6c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/i2c/ibm,i2c-fsi.yaml
>> @@ -0,0 +1,59 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/i2c/ibm,i2c-fsi.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: IBM FSI-attached I2C controller
>> +
>> +maintainers:
>> +  - Eddie James <eajames@...ux.ibm.com>
>> +
>> +description:
>> +  This I2C controller is an FSI CFAM engine, providing access to a number of
>> +  I2C busses. Therefore this node will always be a child of an FSI CFAM node;
>> +  see fsi.txt for details on FSI slave and CFAM nodes.
> Here and in all other schemas - remove reference to fsi.txt. You are
> going to drop this file once you convert everything, right?


Good point, yes.


>
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - ibm,i2c-fsi
>> +
>> +  reg:
>> +    items:
>> +      - description: FSI slave address
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +
>> +allOf:
>> +  - $ref: /schemas/i2c/i2c-controller.yaml#
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    i2c@...0 {
> So no wrapper node is needed. Drop the wrapper node in previous patchset
> where you introduced one with warning.


The other one is actually a child node of the equivalent spi controller, 
so it does need some sort of wrapper (address-cells and size-cells don't 
match).


>
>
> Best regards,
> Krzysztof
>